Which process allows green plants to control the amount of water stored in their leaves? I forgot!

Find the average angular velocity (in rad/s) of a wheel of radius 30.0 cm that starts from rest and makes 6.00 revolutions in 2.50 s. This is my work, but the answer I am getting is not correct: w avg = angular displacement / time = 6.

use the equation KE = 1/2mxv^2 to calculate the kinetic energy of a 100 kg cart moving at a speed of 7 m/s

A hypodermic syringe contains a medicine with the density of water (see figure below). The barrel of the syringe has a cross-sectional area A = 2.20 10-5 m2, and the needle has a cross-sectional area a = 1.00 10-8 m2.

A football place kicker kicks a ball with an initial horizontal velocity of 40 m/s and an initial vertical velocity of 30 m/s. Determine the resultant velocity (magnitude AND direction above the horizontal).

According to newton's second law of motion, how much force will be required to accelerate an object at the same rate if its mass is reduced by half? A. No change in the amount of force is needed. B. Four times the amount of force is needed. C.

The bulk of peoples dreams occurs during what following state?

1. Which of the following lists minerals in order of hardness from lowest to highest on the Mohs hardness scale? A. Gypsum, apatite, topaz, feldspar, corundum B. Fingernail, penny, glass, topaz, diamond C.

The mass of a subway car and passengers is 45,500 kg. If it's acceleration as it leaves a station is 0.6 m/s2, what is the net force (in N) acting on it?

Which of the following determine an object's velocity? A. speed and direction B. direction and acceleration C. speed and mass D. speed, direction, and acceleration

The following statements regarding the exhaust gas recirculation (EGR) valve are all correct except: Low restriction exhaust systems will have no effect on EGR system operation. B.